fac-, facil-, fact-, feas-, -feat, -fect, -feit, -facient, -faction, -fic-, -fy, -ficate, -fication

(Latin: to make, to do, to build, to cause, to produce; forming, shaping)

soporiferously (adverb), more soporiferously, most soporiferously
Characterized by unnatural or excessive sleep; lethargic: During his trip, James was soporiferously affected with a numbness that was caused by a lack of enough sleep.
soporiferousness (s) (noun) (no plural was found)
The state or quality of being sleepy or in a lethargic condition.
soporific (adjective), more soporific, most soporific
1. A reference to an agent or situation that causes a person or people to slumber: The politician's soporific speech put many of the those in the auditorium to sleep.
2. Of the nature of, characterized by, or belonging to sleep or sleepiness: Karon's mother complained that the soporific weather was making her feel sluggish and apathetic.
3. Etymology: from Latin sopor, "sleep" + -ific, from -ficus, from facere, "to do, to make".
A reference to causing someone to sleep.
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Relating to causing sleep.
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Characteristic of causing people to go to sleep.
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sorbefacient
A substance or preparation causing absorption.
specific (adjective), more specific, most specific
1. Relating to something that is clearly and exactly presented or stated: The teacher gave her students a specific topic to write about and not to come up with another subject that they might prefer.
2. Pertaining to particular people or situations: The counselor was presenting an educational plan which was specific for students who were planning to go to a university, or college, after they have graduated from high school.
Clearly and in exact terms; not vague.
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specifically
specification
specifier
specify
stratification (s) (noun), stratifications (pl)
1. The formation of layers in sedimentary rocks through biological, chemical, or physical changes in the sediments forming them.
2. The formation of layers, castes, classes, or other types of strata.
3. A situation or condition where something is arranged in several strata.
4. A layered arrangement or appearance of successive rock strata.
5. The storing of seeds in a chilled moist environment or material in order to induce germination or to preserve them.
6. In hydrology, the arrangement of water masses in a lake or other body of water into two or more horizontal layers having different characteristics.
7. The formation of layers in snow, ice, or firn as a result of snow sedimentation or other processes [a "firn" is a loose, permeable, granular material that is over a year old, and which is transitional between snow and glacier ice].
stratified (adjective), more stratified, most stratified
1. In geology, pertaining to something that has been formed, arranged, or laid down in layers or strata.
2. Relating to the statistics of a population that has been divided into parts on the basis of certain features; such as, ages or geographical locations.
stratifier
stratify (verb), stratifies; stratified; stratifying
1. To form something into a layer or layers: Rock is often stratified between other kinds of sedimentary stone or earth.
2. To form or be formed into castes, classes, or other groups based on status.
3. The storing of seeds in a chilled moist environment or material in order to induce germination or to preserve them.
stultification
stultified